What is the definition of CPR?

CPR, or cardiopulmonary resuscitation, is defined as a lifesaving technique used in emergencies when someone's breathing or heartbeat has stopped. It combines chest compressions with rescue breaths to maintain blood flow and oxygenation to the brain and other vital organs during cardiac arrest. This technique is crucial because prompt administration of CPR can significantly improve the chances of survival and recovery for individuals experiencing a life-threatening event such as a heart attack or drowning.

The other choices describe different types of medical procedures or tests that do not focus on the immediate response required during an emergency. For example, diagnosing heart diseases, performing surgical interventions, or conducting routine diagnostic tests are all related to healthcare but do not represent the urgent, life-saving purpose of CPR. Therefore, understanding the specific role of CPR in emergency situations is essential for anyone involved in healthcare or emergency response.